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Expired Canadian patentCanada

Immunochemical detection of hypoxia in normal and tumor tissue

CA 1319100 C · Owner: Chapman, J. Donald · Inventors: Raleigh, James A.; Chapman, J. Donald; Franko, Allan J.

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Abstract From the Canadian patent

A process for preparing an immunogenic conjugate of a nitroaromatic compound and a carrier comprises colavently bonding the nitroaromatic compound to the carrier in an essentially oxygen-free atmosphere and isolating the conjugate from the reaction mixture. The conjugate may be used to raise antibodies specific to the nitroaromatic hapten. The antibodies may be used to determine the presence of hypoxic tissue in living matter by treating the living matter with a nitroaromatic compound and subsequently testing suspected tissue to determine if there is binding of the antibody to tissue. By use of appropriate markers bound antibodies can be determined to indicate the presence of hypoxic tissue …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted June 15, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 15, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 25, 1988
GrantedJune 15, 1993
Term endedJune 15, 2010
Patent numberCA 1319100 C
Classification (IPC)A61K39/38 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedFeb 25, 1988Patent grantedJune 15, 1993Term endedJune 15, 2010

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.